I'm brand new to F-150 lightning.

[Jim Lewis]

I couldn’t quite understand why the math didn’t seem to work out and energy available was often lower than expected.

Presumably, the Ford Nav software uses kWh discharged, not Ah consumed, in the GOM meter. It just doesn't do things like take into account traffic, wind, and future weather you will encounter on your trip (AFAIK). The GoM may factor in more of your past driving history into your current trip than it should. Any trip planner that didn't take into account the voltage discharge curve to start with would be a sure loser. So I'm not sure Stahl's video on Ah vs. kWh explains any real shortcomings of Ford Nav. Ford knows all about what he's explaining.

Edit_Update: Here's what Microsoft Copilot (the web version: Copilot (microsoft.com) summarizes about Ford Nav:

Yes, the Ford Lightning Navigation System takes into account traffic and suggests appropriate charging times so you’re never left stranded. It uses a series of data points, including outside temperature, driving style, elevation fluctuation, and road surface to enhance performance, adapt range, and suggest charging frequency accordingly 1. You can learn how to utilize your SYNC® screen or FordPass™ to plan your trip and find chargers along the way by watching this helpful video on Plan Your Route With Power My Trip for the 2022 Ford F-150 Lightning 2.

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[Maxx]

Presumably, the Ford Nav software uses kWh discharged, not Ah consumed, in the GOM meter. It just doesn't do things like take into account traffic, wind, and future weather you will encounter on your trip (AFAIK). The GoM may factor in more of your past driving history into your current trip than it should. Any trip planner that didn't take into account the voltage discharge curve to start with would be a sure loser. So I'm not sure Stahl's video on Ah vs. kWh explains any real shortcomings of Ford Nav. Ford knows all about what he's explaining.

I should have expanded on my statement: " I couldn’t quite understand why the math didn’t seem to work out and energy available was often lower than expected. " I was not talking about GOM estimate of range. I was talking about the current numbers provided by BMS not any estimate of future.

Using a scanner, I looked at my SOC, SOH and KWh energy left: At 70% displayed SOC, the actual SOC shown was 64.99% and energy available was 59.58 KWh.

Assuming my original usable capacity was 98 KWh, with SOH of 98.5. The new usable capacity would be 96.53 KWh. 70% and 64.99% of that are both greater than 59.58 KWh. If you go by actual battery capacity not available capacity, it would be even greater.

 

[Bwanapete]

When my truck GOM gets down to 140 miles or so, it starts telling me miles to where it thinks I should charge. When I notice it has done this, I take note of the gap between the miles ro the recommended charge station and the GOM reading. Then if that gap remains the same or increases, as it usually does, I know I can turn the heat up or drive a little faster or even drive past the recommended charge station if I know what is available down the road.

 

[Maquis]

I should have expanded on my statement: " I couldn’t quite understand why the math didn’t seem to work out and energy available was often lower than expected. " I was not talking about GOM estimate of range. I was talking about the current numbers provided by BMS not any estimate of future.

Using a scanner, I looked at my SOC, SOH and KWh energy left: At 70% displayed SOC, the actual SOC shown was 64.99% and energy available was 59.58 KWh.

Assuming my original usable capacity was 98 KWh, with SOH of 98.5. The new usable capacity would be 96.53 KWh. 70% and 64.99% of that are both greater than 59.58 KWh. If you go by actual battery capacity not available capacity, it would be even greater.

The 98 kWh capacity is at some reference temperature, probably 25C. It will definitely be lower at lower temps. 59.58 might be 70% of the actual capacity at the battery’s current actual temp.
I’m speculating, of course. I have no idea how Ford comes up with the numbers you’re seeing.

 

[Maxx]

The 98 kWh capacity is at some reference temperature, probably 25C. It will definitely be lower at lower temps. 59.58 might be 70% of the actual capacity at the battery’s current actual temp.
I’m speculating, of course. I have no idea how Ford comes up with the numbers you’re seeing.

Not sure what the battery temp was but it was definitely bellow optimal temp. Next time, I may check it out after a trip or a charging session when battery is warm. Will keep you guys posted.

In the mean time if you guys have any links or info on impact of high acceleration on HV battery SOH, please do share. Since I saw that 500 Booster limit on Fisker ocean, I am not sure how much fun I am allowed to have. Like how does going to just 80% in power band for 5 seconds compare to going to 100%? How does doing it with cold battery compare to hot? Flooring it for 2 seconds vs 5 seconds? Is it mostly matter of heat the current generates or it is a chemical damage? And generally how does BMS deal with high current draw situations?

 

[joaquinvaldes]

In my case, I have a 2024 Ford Lightning Flash and I have a question: when I charge it to 100% it tells me that I have 264 miles. I'm supposed to see 320 miles because the battery is long-lasting. Why?

 

[TaxmanHog]

In my case, I have a 2024 Ford Lightning Flash and I have a question: when I charge it to 100% it tells me that I have 264 miles. I'm supposed to see 320 miles because the battery is long-lasting. Why?

What region / State / Province do you live in?

Winter factoring is in play for folks in very cold climates.

 

[Zprime29]

In my case, I have a 2024 Ford Lightning Flash and I have a question: when I charge it to 100% it tells me that I have 264 miles. I'm supposed to see 320 miles because the battery is long-lasting. Why?

To piggy back on @TaxmanHog, a recent road trip/mostly highway driving will also result in a lower estimate. Look at your recent driving efficiency, it is likely under 2.0 mpk.

 

[joaquinvaldes]

I took the truck to the dealer, and they reset it. Now when I charged it to 100% the range increased to 331 miles. I've been using the truck for a week without charging it and I see that it remains very stable in the city. I will check when I go on the highway to see how it performs.

 

[TaxmanHog]

I took the truck to the dealer, and they reset it. Now when I charged it to 100% the range increased to 331 miles. I've been using the truck for a week without charging it and I see that it remains very stable in the city. I will check when I go on the highway to see how it performs.

It'll learn your driving habits and the 100% range will settle down some, remember it's only an ideal number to allow us to compare vehicles {Chevy, Dodge, Rivian, etc} to one another, not a super realistic value.

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